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Monthly climate in Storm Lake, Iowa, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Storm Lake features a humid continental climate (Dfa).Temperatures typically range between -6 °C (21 °F) and 24 °C (76 °F) through the year, but rarely can drop to -33 °C (-27 °F) or can rise to as high as 36 °C (96 °F).The average annual precipitation amounts to about 942 mm (37.1 inches) and receives 100 rainy days on the 1 mm (0.04 inches) threshold annually.Storm Lake enjoys an average of 3046 hours of sunshine throughout the year, and daylight varies from 9 hours 5 minutes to 15 hours 14 minutes per day.

Monthly average temperatures in Storm Lake, Iowa, United States §

The warmest months in Storm Lake are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (72 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -2 °C (21 - 28 °F) throughout the day. On average each year, Storm Lake experiences 87 days above 25 °C (77.0 °F) and 133 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Storm Lake, Iowa, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 11°C
(52°F)		 20°C
(68°F)		 24°C
(75°F)		 28°C
(83°F)		 35°C
(95°F)		 36°C
(96°F)		 35°C
(95°F)		 35°C
(96°F)		 34°C
(93°F)		 31°C
(87°F)		 25°C
(77°F)		 20°C
(68°F)
Mean maximum 9°C
(49°F)		 12°C
(54°F)		 20°C
(69°F)		 26°C
(78°F)		 32°C
(89°F)		 33°C
(91°F)		 34°C
(93°F)		 32°C
(90°F)		 33°C
(91°F)		 28°C
(84°F)		 18°C
(65°F)		 13°C
(55°F)
Average high -2°C
(30°F)		 -1°C
(30°F)		 8°C
(46°F)		 14°C
(57°F)		 21°C
(70°F)		 28°C
(83°F)		 29°C
(84°F)		 27°C
(81°F)		 25°C
(77°F)		 15°C
(59°F)		 7°C
(46°F)		 2°C
(36°F)
Daily mean -6°C
(21°F)		 -6°C
(21°F)		 3°C
(37°F)		 8°C
(46°F)		 16°C
(60°F)		 23°C
(73°F)		 24°C
(76°F)		 22°C
(72°F)		 19°C
(67°F)		 10°C
(50°F)		 2°C
(36°F)		 -2°C
(28°F)
Average low -10°C
(14°F)		 -11°C
(12°F)		 -2°C
(28°F)		 2°C
(36°F)		 11°C
(51°F)		 17°C
(63°F)		 19°C
(66°F)		 17°C
(63°F)		 14°C
(57°F)		 5°C
(41°F)		 -3°C
(27°F)		 -7°C
(20°F)
Mean minimum -23°C
(-9°F)		 -24°C
(-10°F)		 -13°C
(10°F)		 -7°C
(19°F)		 3°C
(38°F)		 11°C
(52°F)		 13°C
(55°F)		 11°C
(52°F)		 5°C
(42°F)		 -4°C
(25°F)		 -12°C
(11°F)		 -17°C
(1°F)
Minimum -29°C
(-20°F)		 -33°C
(-27°F)		 -24°C
(-10°F)		 -12°C
(10°F)		 1°C
(35°F)		 8°C
(46°F)		 12°C
(54°F)		 10°C
(50°F)		 3°C
(38°F)		 -9°C
(16°F)		 -16°C
(3°F)		 -23°C
(-10°F)

Compare climate in Storm Lake with other places

Compare temperature, precipitation, sunshine, UV index in Storm Lake, Iowa, United States with other places around the world.

Monthly average precipitation in Storm Lake, Iowa, United States §

Storm Lake usually has the most precipitation in May, June and August, with an average of 11 rainy days and 125 mm (4.9 inches) of precipitation per month.The driest months in Storm Lake are January, February and November. On average, 33 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Storm Lake, Iowa, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 26 (1.0) 40 (1.6) 71 (2.8) 88 (3.5) 140 (5.5) 127 (5.0) 66 (2.6) 108 (4.2) 105 (4.1) 96 (3.8) 34 (1.3) 41 (1.6)
Average precipitation days (≥ 1 mm) 4 7 8 10 14 11 7 10 9 10 6 4

Monthly sunshine hours in Storm Lake, Iowa, United States §

The sunniest months in Storm Lake are June, July and August, when the sun shines an average of 11 hours 22 minutes a day.Least sunny months in Storm Lake: January, February and December receive an average of 6 hours 7 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Storm Lake, Iowa, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 144 204 220 251 265 345 371 330 267 226 210 207
Mean daily daylight hours 9h 26m 10h 33m 11h 58m 13h 24m 14h 38m 15h 14m 14h 54m 13h 49m 12h 25m 10h 59m 9h 43m 9h 5m

Solar UV radiation in Storm Lake, Iowa, United States §

Storm Lake experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Storm Lake UV Index data.

Average daily maximum UV levels by month for Storm Lake, Iowa, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 5 5 8 9 11 10 9 8 5 3 3